Mechanism foe grain binders



(No Model?) 4 Sheets-Sheet 1.

W. BUTTERFIELD.

CORD TYING MEGHANISM FOR GRAIN BINDERS.

No. 365,044. Patented June 21, 1887.

(No Model.) 4 Sheets-Sheet 2.

W. BUTTERFIELD.

CORD TYING MECHANISM FOR GRAIN BINDERS. No. 365,044.- PatentedJune 21,1887 (No Model.) 4 Sheets-Sheet 3.

W. BUTTBRPIELD.

CORD TYING MECHANISMYPOR GRAIN BINDER S. No, 365,044. Patented June 21,1887.

(No Model.) 4 Sheets-Sheet 4.

W. BUTTERPIELD.

CORD TYING MECHANISM FOR GRAIN BINDERS.

Patented June 21, 1887;

I UNITED STATES ATENT Fries.

XVILLIAM BUTTERFIELD, OF AUBURN, NE\V YORK, ASSIG-NOR TO- D. M. OSBORNE& COMPANY, OF SAME PLACE.

CORD-TYING MECHANISM FOR GRAIN-BINDERS.

SPECIFICATION forming part of Letters Patent No. 365,044, dated June 21,1887.

Original application filed May 25, 189-4, Serial No. 133,815. Dividedand this application filed October 22, 1885. Serial No. 180,059. (Nomodel.)

.To aZZ whom it may concern:

Be it known that I, \VILLIAM BUTTERFIELD, of Auburn, in the county ofCayuga and State of New York, have invented certain Improve- -ments inCord-Tying Mechanisms for Grain- Binders, of which the following is aspecification. a

This invention relates to that class of machines which contain a rotarytying-bill consisting of a spindle with two jaws extending atsubstantially right angles to its axis.

The object of this invention is mainly to provide for the more certainengagement of the tying-bill with the cord at the commencement of thetying operation, and for the discharge of the knot from the tyer at thecompletion of the operation; and to this end it consists, generallyspeaking, in combining with the tyingbill operating mechanism whereby itis presented in a forward direction to receive the cord, revolved a partof one rotation to complete the knot, arrested with its bill inabackward position to permit the discharge of the knot, and, finally,turned to its original position, the entire operation of forming and discharging the knot being performed during a single rotation of the tyer.

For the purpose of illustration, I have represented my invention asembodied in a binding-machine of the well-known Appleby type, in whichthe binding arm or needle ascending through the binding-table, acrossthe grainpassage, and through a slotted breast-plate presents the cordto a tying mechanism above the latter.

I have represented the invention embodied in connection with otherdetails forming the subject of a separate patent, N 0. 333,922, datedJanuary 5, 1886, and based 011 original application No. 132,815, ofwhich the application for the present patent is a division; but itis tobe understood that, with the exception of the means for imparting theintermittent rotation thereto, the entire tying mechanism may be of anyordinary construction.

Referring to the accompanying drawings, Figure 1 represents an outlineelevation of the principal parts of the binding-machine. Fig.

2 is an elevation of the tying mechanism,com-

prising the cutting, clamping, and knotting devices. Fig. 3 represents ahorizontal section taken immediately above the breast plate. Fig. 4 is aside elevation of the tying-bill, its actuating-wheel, and otheradjacent parts. Fig. 5 is a side elevation of the tying-bill and itsactuating-wheel, the latter being shown in vertical section. Fig. 6 is atop plan view of the tyer-operating pinion.

Referring to the drawings, 13 represents the inclined binding-table,onwhich theloose grain is delivered in a continuous stream; C, thebreast-plate overlying the table at a distance therefrom to confine thegrain on the upper side; D, the compressor-arm,which rises above thetable to confine the grain during the bind ing operation, and whichsubsequently descends to permit the discharge of the bound bundle.

E represents the rotary arm by which the bundle is delivered from thelower edge of the table; F, the tying bill located above thebreast-plate; G, the actuating-pinion secured to its spindle, and H themain driving-wheel, provided with teeth and delay-surfaces to i1npart anintermitting rotation to the tyer.

7 Except as to the peculiarities hereinafter de tailed, the foregoingparts are of ordinary construetion.

The tying-bill consists, as usual, of a spin dle provided at one endwith two laterallyextending jaws, one of which is fixed,while the otheris pivoted, in order that it may be opened and closed for the purpose ofgrasping theend of the cord and drawing the same through a surroundingloop to complete the knot. The movable jaw qis held in a normally-closedposition by means of a sliding rod, a, lying in a longitudinal groove inthe spindle and acted upon at its upper end by a spring, 8. The openingof thisjaw during the proper portion of its revolution is effected bymeans of a stationary cam, s, which acts upon a roller attached to aheel projection of the movable jaw.

Heretofore it has been the custom to impart to the tyer a singlecontinuous rotation, the jaws stopping always in one and the sameposition. In practice it is found thatif this position be such as toinsure the proper engagement of the cord with the tyer it will in mostforms of machine prevent the convenient discharge of the knot. To avoidthis trouble, I provide the operating-wheel and the tyerpinion withco-operating teeth and delay-surfaces of such character that during therotation of the driving-wheel H the tyer is first held with its jaws ina forward position to receive the cord, then given about three-fourthsof a revolution in a forward direction, so as to form a loop and graspthe end of the cord, and stopped with its bill pointing in a rearwarddirection until the stripping of the knot is effected, after which theforward rotation is continued until the bill resumes its originalposition ready to receive the cord for the next bundle. The tyer-pinionhas teeth on one side only,while the oppositeside hasaflatdelay-surface, I, and a shoulder, in. The wheel H is provided with teetha, to give a forward rotation to the pinion also with an annular rim ordelay-surface, o, to co-operate with the surface Z and prevent therotation of the tyer. The wheel is further provided with an annularsurface, p, to encounter the shoulder m on the pinion, and prevent thetyerfrom being turned too far ahead -by reason of the impetus which itreceives from the driving-gear. It will be observed that the surfaces 0and p extend but partly around the wheel, and that the gear-teeth arelocated between the ends of these surfaces. The tyer stands normally inthe position shown by full lines in Fig. 3, being held by thedelay-surfaces 0 acting against the surface Z of the pinion. As thewheel revolves, the delay-surface 0 leaves the surface l, and the teetha engage the pinion, imparting thereto and to the tyer about two-thirdsor three-fourths of a revolution, causing the tyer to twist the ends ofthe cord together in the form of aloop thereon. When the tyer reachesthe position shown by dotted lines in Fig. 11, with the bill extendingin a rearward direction-that is to say, toward the.

delivery side of the machine-the teeth a leave 7 the pinion and themotion-of the tyer ceases for the moment, its further rotation beingprevented by the strain of the cord passing thence to the sheaf. \Vhilethe parts are in-this position the rotary ejector-arm E acts upon thebundle, urging the same from the lower edge of the table, drawing orstripping the loop from the bill, which pulls the end of the cordthrough the loop,thereby completing the knot. The forward end of thedelay-surface 0' of the wheel now acts against the delay-surface Z ofthe pinion,completing its rotation,so that both the pinion and the tyerassume their original and normal positions. The reverse rotation of thetyer between the action of the drivingteeth and the action of thedelay-surfaces is prevented by the roller on the heel of the tyerbearing with a spring pressure against the abrupt face or shoulder ofthestationary opening cam s before alluded to.

As regards the operation of the tyer, theessence of the inventionconsists in giving the same but a partial rotation at a time, andcausing its bill to be presented in one direction to receive the cordand in another direction to discharge the knot.

The skilled mechanic will understand that the details may be variouslymodified, and that many mechanical equivalents and devices known in theart are applicable for the purpose of actuating the tyer.

As an additional means for insuringthe proper delivery of the cord toand from the tying devices, I propose to make use-of a breast-platehaving an angular slot therein, such as represented in Fig. 3. Onreference to this figure it will be seen that the slot is deflectedtoward the tyer-spindle as it approaches the latter, and that itpresents on the side distant from the spindle an oblique edge, b,against which the cord rides in its passage to the tyer. When thetying-bill is in its normal or forward position,it extends obliquelyacross the slot and overlies the edge I), as shown,

completely spanning or bridging the slot, so

that the movement of the cord past the bill is impossible. In rear ofthe bill the slot extends laterally and obliquely therefrom toward thedelivery side of the machine, presenting an edge, 0. This edge lies in aplane nearly parallel with the direction of the bill. When the latter isin its backward position and the cord is forcibly drawn backward bythe-delivery of the bundle, the edge 0 acts to crowd or force the cordtoward the extremity of the bill; or, in other words, it acts as aclearer or stripper to facilitate the discharge of the knot.

In order'to prevent the edge b from cutting or chafing the cord, Iprefer to make use of a plate, 9, bolted to the outer side of thebreastplate, its edge being. rounder and presented in position to formone side or edge of the slot, as plainly shown in Fig. 3.

I am aware that in a grain-binding machine having a .tyer of a formwhich requiresone and one-half revolutionto form the knot the tyer waspresented with its bill in a forward direction to receive the cord andin abackward direction to discharge the knot; but I believe myself to bethe first to provide an organization under which each knot is completedand discharged by a single revolution of the tyer, and in which the tyeris presented in one position to receive the cord and in a differentposition to permit the discharge of the knot.

Having thus described my invention, what I claim is 1.- The rotarytying-bill having the movable jaw to grasp the cord, in combination withmeans, substantially as described, for opening and closing said jaw, andwith driving-gear whereby the .tyer is given a single rotation and aninterval of rest during the tying of each bundle, substantially asdescribed and shown.

2. The tying-bill having the movable jaw, the spring acting to close thejaw, the stationary cam acting to open the jaw at each revolution of thetyer, the tyer-pinion provided with IIO teeth and delay-surfaces, andthe drivingwheel provided with corresponding teeth and delay-surfaces,adapted, as described, to present the bill in one position to receivethe cord, subsequently impart thereto Y a forward rota tion to completethe knot, then arrest the motion that the knot may be discharged, andfinally continue the motion until the bill resumes its originalposition, whereby the formation and discharge of the knot are secured bya single rotation of the tyer.

3. In combination with the breast-plate having the slot curved towardthe tyer in advance thereof and from the tyerin rear thereof, the rotarytyer, and operating mechanism, substantially as described, whereby thetyer is first presented with its bill in a forward direction to receivethe cord, then rotated a part of one revolution to form the knot, andstopped in a rearward position to permit the discharge of the knot.

In testimony whereof I hereunto set my hand, this 17th day of October,1835, in the presence of two attesting witnesses.

\VILLIAM BUTTERFIELD.

Witnesses:

EDWARD E. HAnILroN, \VILLTAM. H. HAnnIs.

